<?xml version="1.0" encoding="UTF-8"?><rss xmlns:dc="http://purl.org/dc/elements/1.1/" xmlns:content="http://purl.org/rss/1.0/modules/content/" xmlns:atom="http://www.w3.org/2005/Atom" version="2.0"><channel><title><![CDATA[RSS Feed]]></title><description><![CDATA[RSS Feed]]></description><link>http://direct.ecency.com</link><image><url>http://direct.ecency.com/logo512.png</url><title>RSS Feed</title><link>http://direct.ecency.com</link></image><generator>RSS for Node</generator><lastBuildDate>Sat, 18 Apr 2026 06:03:43 GMT</lastBuildDate><atom:link href="http://direct.ecency.com/created/number-theory/rss.xml" rel="self" type="application/rss+xml"/><item><title><![CDATA[Curating the Internet: Science and technology micro-summaries for September 29, 2019]]></title><description><![CDATA[IEEE Spectrum's weekly selection of awesome robot videos features Boston Dynamics' Atlas robot doing some gymnastics moves; Researchers create neurons from glial cells, at scale; An argument that math]]></description><link>http://direct.ecency.com/rsslog/@remlaps-lite/curating-the-internet-science-and-technology-micro-summaries-for-september-29-2019</link><guid isPermaLink="true">http://direct.ecency.com/rsslog/@remlaps-lite/curating-the-internet-science-and-technology-micro-summaries-for-september-29-2019</guid><category><![CDATA[rsslog]]></category><dc:creator><![CDATA[remlaps-lite]]></dc:creator><pubDate>Sun, 29 Sep 2019 15:56:36 GMT</pubDate><enclosure url="https://images.ecency.com/p/X37EMQ9WSwsLaUVnWj5v4rfuehQsoVtukrb5zwdXbo5aA1Ad39Ag3xeAuevFPU9bTUrXDzwbqgyQhfm3ezYLQxF41mZuACY6P2die?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Perfect Number]]></title><description><![CDATA[A natural number equal to the sum of all its divisors except itself. The concept of a "perfect number", a positive integer equal to the sum of its positive proper divisors minus itself, stems]]></description><link>http://direct.ecency.com/writing/@sunit/perfect-number</link><guid isPermaLink="true">http://direct.ecency.com/writing/@sunit/perfect-number</guid><category><![CDATA[writing]]></category><dc:creator><![CDATA[sunit]]></dc:creator><pubDate>Thu, 08 Nov 2018 00:10:15 GMT</pubDate><enclosure url="https://images.ecency.com/p/7ohP4GDMGPrUMp8dW6yuJTR9MKNu8P8DCXDU9qmmpmwHgv5mRi3gFvVkqvpVwTjvvJx2dhW6XR5YBTCDJpEEDctHvB5eU2GS5YtE?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Digit Sum Sequences]]></title><description><![CDATA[A daily puzzle from @mathematrix has as its solution a "digit sum sequence": each new term is created by adding the sum of digits of the previous number. So, for example, starting from 1 we get]]></description><link>http://direct.ecency.com/math/@markgritter/digit-sum-sequences</link><guid isPermaLink="true">http://direct.ecency.com/math/@markgritter/digit-sum-sequences</guid><category><![CDATA[math]]></category><dc:creator><![CDATA[markgritter]]></dc:creator><pubDate>Tue, 19 Jun 2018 16:47:39 GMT</pubDate></item><item><title><![CDATA[کارل فریدریش گاوس: سرآمدِ ریاضی‌دانان]]></title><description><![CDATA[امروز سی‌ام آوریل، سالروز تولدش یوهان کارل فریدریش گاوس است. او یکی از بزرگ‌ترین ریاضی‌دانان تاریخ بود که در عرصه‌های مختلف خدمات بی‌همتایی به علم ریاضیات و فیزیک کرد. Image credit: Anders Sandberg نکته‌ی]]></description><link>http://direct.ecency.com/math/@parsik/post-00385</link><guid isPermaLink="true">http://direct.ecency.com/math/@parsik/post-00385</guid><category><![CDATA[math]]></category><dc:creator><![CDATA[parsik]]></dc:creator><pubDate>Mon, 30 Apr 2018 17:40:45 GMT</pubDate><enclosure url="https://images.ecency.com/p/JvFFVmatwWHVQPjDcGkFxELgGtwNAntRtiqDuEyy8Y4SpcGpGDE4DunijGDtXpFve1sjkJweFBr2LRmGQ4PBdt8iGzcwjfJgtBFHELHxZD4R3X3XSF6qTZz1KXcsuad2bWYNbMG2fG?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[رامانوجان، ریاضی‌دان هندی]]></title><description><![CDATA[در این پست تصمیم گرفتم درباره‌ی ریاضی‌دان بزرگ هندی، رامانوجان، مطالبی بنویسم. شرینیواسا رامانوجان در سال ۱۸۸۷ در هندوستان به دنیا آمد و در سال ۱۹۲۰ در همان کشور از دنیا رفت. در آن زمان، هندوستان تحت سلطه‌ی]]></description><link>http://direct.ecency.com/science/@danai/p0092</link><guid isPermaLink="true">http://direct.ecency.com/science/@danai/p0092</guid><category><![CDATA[science]]></category><dc:creator><![CDATA[danai]]></dc:creator><pubDate>Sat, 14 Apr 2018 17:28:06 GMT</pubDate><enclosure url="https://images.ecency.com/p/Zskj9C56UoneA2abYGaKqMNzTcX4E16nWAyQCQfEWKr18srxMh7HiUb1uf23TKGRV8SK3FbHTtvDHBYkiwgNKqc3Z5FCdwEmHhcTqy9z88V4ZxxPVZJE?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[نظرية الأعداد Number Theory]]></title><description><![CDATA[نظرية الأعداد Number Theory يتعامل هذا الفرع من الرياضيات مع الأعداد الطبيعية (1، 2، 3، ... إلخ) ويهتم أكثر بالعلاقات الكائنة بينها. وقد صنَّف علماء الرياضيات منذ القديم الأعداد إلى أنواع عدَّة، بعضها]]></description><link>http://direct.ecency.com/number-theory/@amshazlie/nzryh-alaadad-number-theory</link><guid isPermaLink="true">http://direct.ecency.com/number-theory/@amshazlie/nzryh-alaadad-number-theory</guid><category><![CDATA[number-theory]]></category><dc:creator><![CDATA[amshazlie]]></dc:creator><pubDate>Wed, 24 Jan 2018 08:14:33 GMT</pubDate><enclosure url="https://images.ecency.com/p/3HaJVvr6qfokhP4rRz47qTXxwouxBdXnHNDiM1XmKcektAR1cXYHPU5Enkf7hMkBiGLcwLJwG5TBuF3x1fgJArUNKULMcmdh2S57D3t?format=match&amp;mode=fit" length="0" type="false"/></item><item><title><![CDATA[Math Is Good For You]]></title><description><![CDATA[(From AIME 1985) The numbers in the sequence 101, 104, 109, 116, ... are of the form: 100 + n^2, where n = 1, 2, 3, 4, ... Let Dn be the greatest common divisor (GCD) of any 2 consecutive terms. As n ranges]]></description><link>http://direct.ecency.com/math/@voice-of-apollo/math-is-good-for-you</link><guid isPermaLink="true">http://direct.ecency.com/math/@voice-of-apollo/math-is-good-for-you</guid><category><![CDATA[math]]></category><dc:creator><![CDATA[voice-of-apollo]]></dc:creator><pubDate>Fri, 13 Oct 2017 00:41:36 GMT</pubDate><enclosure url="https://images.ecency.com/p/4i88GgaV8qiGEw1xifwYz2xp7RJEnNpBZq7dn2K5ztVKXhG7HreWFLLRZygAH9JE6FHxug6WkfBUV7gAx9U9jBh9n2U4o88TTsH6ddMUu4nFCvnxqRAXekpvbQ?format=match&amp;mode=fit" length="0" type="false"/></item></channel></rss>